Brush and holder for electrical machines



(No Model.) 2 Sheets-Sheen 1.

v E.W'.RIGE,'J1-." BRUSH AND HOLDER FOR ELECTRICAL MACHINES.

No. 426,471. 1 PatentedAprQZQ, 1890.

Suva H107,

Quil 11 090 co Edwin, WZZLPRiCQ-LI 2 sheets-41mm 2. J1".

(NO Model.)

1-]. RICE BRUSH AND HOLDER FOR ELECTRICAL MACHINES. No. 426,471.

PatentedApnZQ, 1890 UNITED Sii nirss PAT T Circles.

" EDWIKWILBUR men. OF LYN-n; 'nnssscn'cssrrs.

BRUSH AND iiornsn'ros sLEoTRicAL mAci-nnss.

, SPEGIFIGATIDN forming part of Letters Patent No. 426,4'71. dated .h prii 29, 1890.

\ Application n51. March so, 1589: we re. 305,427. (liomodh) To all whom it'may concern:

Be itknown that I Eowm WILBUR RICE,

J 1"., a citizen of the ll nited stetes, and n resident of Lynn, in the county of Essex and 5 State of Massachusetts, have invented certain new and useful Brushes and Holders Tlierefor for Electrical Machines, of which the following is a specification.

My invention relates to electric commutat- 1o in or collecting cleviees.used, 'itli dynamo electric machines or motors or other electric apparatus.

My invention relates especially to devices of this character in which blocks or pieces of 1; 5 carbon are employed in place of copper as the not wish to he understood as limitin in self to the use of the invention with siicii a carbon'block, the invention bcing-cqimllyeppiieableito a conducting-block of any description used as a sliding eontect-hody-as, for instance, a cominutatorcylinderhieek made of carbon instead of copper.

My invention consists in brnsirhciding sr- .rangements whereby is secured at; times a. good electri 2.]. connection the line and brush, while at HZO'SQJHG time the 0 brush is free to play up and down should it be necessary for-it to dose on account of iirregularitiesor roughness of the commutator. My invention consists, also, in the general andeetail l'citnres hereinafter more specific 5 ally claimed.

I have herein described and shown my invention as carried out in eon'nectioirwi'th a. carbon contact brush'or block having a; thick, or 'he'wy coating of copper, forming s meehnnicel rc-enforcing and heart-dissipating enw'elo m; but}; lmish'or eontectso constructed forms thcsubj'rct oi claims-iii another m.

cation for petentfiied ii inc February 7,1890, SericlNo. 339,525. a

In the'accompanying cmwings, Figure -1 15 position upon the ceimnnmtor.

nection between the brush and line, and also the elastic supports for the carbon-blocks.

bon pieces, Fig. 3. Fig. 5"is a siclcricn of the brush, showing how it is held by an elns-z tic support.

a modified means of supporting the -bi' ush and making 'eiectrienl connection with the suitable dimensions forced onto .the' carbon by mechanical pressnrej 1 shows such :1 bloc}: open a commutator C. tater revolves at high on sedoy the fri in its yesiti on When the; commu- ..;.cer.l, some heat is genon between it midi-he heat away from the commutator, asindicatctl by the. arrows, and thus,p'reYent-nndne heatheiivy currents to or from the cbminutator.

and down in the box or receptiiclel -Fi'g 5 shows more clearly this nicthodo snpportin the carbon pieces in position. Con- Fig. 6 isa cross-section 0?? asqnarc brush. Fig. 7 shows in side elevation a further modificesupporting appliesirbonbrn'eli. The copper coating or f covering will, however, rspidlycoudnet' the j eperspect-ive view of o cnrbc'n'ln-nsh inits- Fig. 2 is :an' end section of the cm'bonihrlish or 'block. Fig. 3 shows the means of establishing con- 6 Fig. 4 is a. vertical section of one of the carseine. Fig. Sis on elevation of Fig. 7..-

K is a coating or ceverino of copper. This.

coating may be plated-on by electric dcposit-ion or it maybe a copper box 1 or tube of ing of the same, and will alse'helpto convey Fig. 3 siioivsliow iinstcad of a singlecar hon block K, Fi". i, there may be employed f hmwhh 90 '1. aiiciry 1c arm sapa'inag effect abini'ned 7(1 nection may he made bccweon tho 13 110 and carbon blocks or pivcm: by flexible 2am conductors E E Szc. in this; insscmwe a ho. H is made throughth'c val-bun, show-x in' by spring 7 v r H 5 Fig: 4:, into which the cud. of the cable 3 1" The 01 G5 wing-k1?" isslilmzdthe ends previouslybz'wed of anyiusul 1011,1r5-111S01i1C-1 bent mu. -.KO""\'H,SOE1SZOlfl'ijSSdiWlilwith and then soi ereii securely or GUELOBYJ3 fasvkzayicua' pressure upon "nhceblouks enecL The interior surfiwe of thqholc I1 m piesc 2);; them. to slide up and preferably planted with copper, 2m ShOWfi. It down in izadepezifo'nl h} of any 2m- :0 is not necessary, of-comse, soic'mx' who cable tion of as auxilimypressure 1%. of that. whiuh tends E in position imfl the hole II, it may he downwzuwi indcpen 'permanentiy attached to flue bus: mfhulim' 3, to move U118 65 porung-zwm for 002 E; 11? mpzmd reliance pimaed uyon the coy z' springs plied before, tapm'mit the bloeksio follow 8:: S 2350., ("ind the comm-0i 0? 'he "310 31; pieces In. irr-sgu1a.-viti d of the cmzxnufixaipor. The

\Yfirfhe bot: 0 csnyey the current same inuegendeli: ar i'iia-ry presfisure i T1115: 8 illustrate modiiezz mmns (if flied in 7 by 33mm springs 55', supporing the urns 1%. by the woighiis of the Dhaka the-mach B is box 01' l'ecaptacie 01059 1 011 ,tmee Ii Claim as, my invention @ide's,fbut spam on the other. The carbon in an e ecii "30mm r02 3 mrboncmr- 2o pieem pieces are 'heii in positin in thifs 3e" 1? ciwblw'iz 112. mg p118? envelope, 1 1- (Triceptagls by the springs $5 which are pmvkiefi ainatmn with box 01' receptacle 0?; copper at their free ends with rollers W. m'essin" "11 which the block 911C105 unzmci down and a v n agmnsc the blocks at then" expssci'l sum and lanim'allypmssl11g sprmg bezmng agzunst the holdingihem'upright in thy-21205;. S 'moai-t to 310111 in position.

25 press downward upon the blocks 20 as to 110111 in an eieutric comnmtzrior, the combinm ihemngamst the comlnu'mtowsmface with. 510m, "with a carbon-contact-bhck, of :1 b0); 0!. which they are to make contact. Case cce'g'tacie in. y /Lick it is remimd in positlon,

'spr'mgs fi S are carried by 2m *1, spiing Lauri'ing to move wi l bot: in" 1436i S, 'tg) which is applied 21, spri T the 0pp 2site contacbsuvfaee with which 33kg 30 move the whole systemdownwa 1110c med .10; cmmecgjon, 21,316 :m My c0111!nutaim cylinder. The wring he can-U011 sscribefi. I

mmmtor-bz h cempasedmu; dawn, in cambi'naeasing: springs bearing 13106221; 1 apilfings, '105 be name is surface iiiai'y t0 ihe spring S, and is l nsmzsller (11' am Pier than the spri *it to follow i'rrcg'umriiiiggs of am 5 eammuta'wz 11.0 which the slim B would notr'ezxdilyresponil The B is shown in plan in 9.

Fig". 8 shows a, Mamba: @f c: C, 85 0, mounted in a mm 40 independently by spring-su W' W", 6319. A

I; will of course "be finuezktuoc'l A? emctric C 1 L'JOH in 'iiilQ upon finch the brush. bw

"1 elecric sommnfiatmg a 'cmfbon con- 1 l1)- tack bioc bob; a: geceptacle B, Fig. 3J5 is be a 0f copper and. .1 1c in any {asired way,pmfemblyin 'th A: snppmmd in'posi'ti. l li'sl id fifl/g'g n: receptacle 4,5 shown in Fig. 7. En f e af 53,005 cmp ducbi l g awning h'which ,ii; is blocks in the vl'eeepmcle nliybefi'epenad on tfrw so Emcwfiup and d0 ,inponfiairmtiou f0 keep them down upoii K0110 cylinder, or 1m albtf ii pressing; spfing; as and Em springs SC uS just Gescribefi, maybe used for (he gmrpomdescribed; '1

the pm-paw. 5. 2m eiectrie commugacdr, 2a 2521 12021 cm 50 The box or receptacle 1s pref'e'rabhg @f a tam 1001; supp T'LQG. in, a, gage or: racepmcle' meta-1 like copper for the daublepurposw of in Which i'b is free tqmmngflap zmrldmvxifin. }1e1ping 1'0 maintain eleetrisal conueceion becombinatiou'wi "Fm "bki bonchuiizor East;- iwagn thg b10cks Che eutsie ccnduc'cos, d 130 said 151061 2 116131 yea-metrical ch; :mfi of conducting and @issipa'iiug iieat me 1011 1 0 m mm fi ls 931M116. I 55 developed in the blacks by tha elec'txic mm The, ezbm'bimtion, with tiize'ca-rbun abnreiit or by friction at their filming contact m eib slifie in. its; Cage 01" box, of surface j tilflex 3r Yfzirfltnefljzi Ia wket- 01' "Fig. 10 ilhiiitmie s ano'iher momma/tier! 0 I I the form of bm'z ah and. 21016162: far has same. 60 The brushes ar in this image 31 @416 circuiar'in m DimL crosssection, similar to an m'cdighfi mayhem, "fi-it'tvb. a, :mdpf suimblelength. Thereaepmle orbs}: flan Bis made 'wfcnnform t0 this 1 and. the H11 qr, a @zztrbm contixcbbrush 1 soafmt w;- imlejj 'pr'oyld'ed 031w plating" com'bluacarbon pieces aawe'ehstiissllysuppsrwiinpw 5;, sx'tionilgy sp'inigfl The name R 7 may a v "14s ma.

flexible conductor, as and for the purpose de- Signed at Lynn, in the county of Essex and scribed. State ofMassachusetts,this27thdayof March,

9. The combination, with the carbon con- A. D. 1889. tact-block, of the cage or receptacle in which EDWIN WILBUR RICE, JR. 5 it may move up and down, a spring pressing Witnesses: downward upon the block, and a laterally J. W. GIBBONVHY pressing spring provided with a con'tact z'ofler. I ROBERT SHANE). 

